The Screw,shoulder, cataloged under National Stock Number 5305-01-131-8461, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-131-8461 |
| Primary Part Number | 6321-0090-01 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division |
| Status | ACTIVE |
| Fastener Length | 4.112 INCHES NOMINAL IN |
| Shoulder Length | 1.994 INCHES NOMINAL FIRST SHOULDER IN |
| Surface Treatment Document and Classification | MIL-T-10727 TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.166 INCHES MINIMUM AND 0.190 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.752 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | TIN OVERALL |
| Internal Drive Style | SLOT |
| Countersink Angle | 81.0 DEGREES MINIMUM AND 83.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 1117 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.385 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 6321-0090-01 PRIMARY | Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division (USA) |
| Reference | Meaning |
|---|---|
| 10115296 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5305-01-131-8461 is a Screw,shoulder, manufactured by Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-131-8461 has 1 manufacturer part number on file: 6321-0090-01 (Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division).
Key specifications for 6321-0090-01: Fastener Length: 4.112 INCHES NOMINAL IN; Shoulder Length: 1.994 INCHES NOMINAL FIRST SHOULDER IN; Surface Treatment Document and Classification: MIL-T-10727 TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Shoulder Diameter: 0.166 INCHES MINIMUM AND 0.190 INCHES MAXIMUM FIRST SHOULDER IN. 18 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.